Organizing the layers
Before adding the flat colors, I organize the layers. Up to now, I’ve been organizing layer folders by process, but from this stage onward I will organize the layers into different folders for the character and the background (autumn leaves in foreground, window frame in foreground, window frame, and classroom).
 Adding flat colors
To add the flat colors, I mainly use the [Fill] tool > [Refer other layers], and paint each part on a separate layer.
▼ Tool used: [Refer other layers]
This sub tool fills the area on the selected layer while referring to drawn parts on other layers.
I use the [Pen] tool > [Mapping pen] to paint small unfilled areas.
▼ Tool used: [Mapping pen]
This sub tool doesn’t change much according to the pen pressure, and it is good for drawing delicate lines often seen in manga for young girls. It’s set at 100% opacity, so it’s useful for filling in small unfilled areas and drawing small details.
On parts of the skin where another color will layer on top, I go over the lines into the space where the uniform is so that there won’t be any unfilled gaps between the colors.
Now I’ve finished adding the colors for the character.
I fill the background in the same way as for the character.
 Preparing for coloring
To prepare for the next coloring stage, I move the rough color layers above the flat color layers.
On the [Layer] palette, I click the [Clip at Layer Below] icon at the top to clip the rough color layer as a base layer.
My flat color layers are divided into smaller sections than the rough color layers, so I go to the [Layer] menu > [Duplicate Layer] and duplicate the rough color layers for the background and clip them to each flat color layer.
When you [Clip at Layer Below], the selected layer will only be shown within the drawn parts of the lower layer (or layer folder). You can set this using the icon at the top of the [Layer] palette.
By clipping my rough color layers to the flat color layers, the rough color only shows in the areas that I added the flat colors.
By using the rough color layers, I can get a better idea of the overall effect when painting the character. This will help me in the painting stage.
Now, my preparation for coloring is complete.